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[期刊论文] 作者:DINGHong,WANGYue-si,LIWei-hua, 来源:中国农业科学:英文版 年份:2005
A field experiment was conducted to investigate the variations in denitrification losses and N2O emissions from 4 different types of nitrogen fertilizers (urea,...
[期刊论文] 作者:SONGChang-chun,WANGYi-Yong,WANGYue-si,YANBai-xing,WANGDe-xuan,ZHAOZhi-Chun,LOUYan-jing, 来源:黑龙江科技学院学报 年份:2003
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7...
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